The Straight 8 is a rear wheel drive saloon (sedan) automobile with a front placed engine, sold by Diana.
The 8 cylinder, naturally aspirated engine has 2 valves per cylinder and a displacement of 3.9 litres. For this model it produces power and torque figures of 72 bhp (73 PS/54 kW) at 2950 rpm and 207 Nm (153 lbft/21.1 kgm) at 1200 rpm respectively.
A 3 speed manual transmission supplies the power to the driven wheels.
Full specs
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| bodywork | |||
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| Body type | 6/7 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3429 mm | 135 inches | |
| Track/tread (front) | |||
| Track/tread (rear) | |||
| Length | 4699 mm | 185 inches | |
| Width | |||
| Height | |||
| Ground clearance | |||
| length:wheelbase ratio | 1.37 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 68.2 litres | 15 [18] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Continental | ||
| Engine code | 12 Z | ||
| Cylinders | Straight 8 | ||
| Capacity | 3.9 litre 3940 cc (240.434 cu in) |
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| Bore × Stroke | 76.2 × 108 mm
3 × 4.25 in |
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| Bore/stroke ratio | 0.71 | ||
| Valve gear |
2 valves per cylinder 16 valves in total |
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| maximum power output | 73 PS (72 bhp) (54 kW) at 2950 rpm |
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| maximum torque | 207 Nm (153 ft·lb) (21.1 kgm) at 1200 rpm |
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| Specific output | 13.6 kW/litre 18.5 ps/litre 18.3 bhp/litre 0.3 bhp/cu in |
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| Specific torque |
52.54 Nm/litre
0.64 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 4.66:1 | ||
| Fuel system | 1 St carb | ||
| bmep (brake mean effective pressure) | |||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 492.5 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | |||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | |||
| Power-to-weight ratio | |||
| Weight-to-power ratio | |||
| fuel consumption | |||
| Fuel consumption | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | LA.SE. | ||
| Rear suspension | LA.SE. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 32 x 6.20 | ||
| Tyres rear | 32 x 6.20 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 3 speed manual | ||
| Top gear ratio | |||
| Final drive ratio | 5.10 | ||
| general | |||
| Carfolio.com ID | 118140 | ||
| Production total | |||
| Model code | |||
| RAC rating | 28.8 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1925 Diana Straight 8 added 2004-02-10. Last modified 2013-02-28. |
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